Which party must directly observe the screen when transmitting or accepting release of authorities in CAD?

• A. The Employee Must Observe
• B. The Yardmaster Must Observe
• C. The System Automatically Checks
• D. The Train Dispatcher Or Control Operator Must Directly Observe The Screen Display

Answer: (D)

The key idea is that the Train Dispatcher or Control Operator must watch the CAD screen directly when sending or accepting a release of authorities. This real-time, hands-on verification ensures the right train is being granted (or released from) the correct block at the correct time, and that the action is properly recorded in the system. Seeing the actual screen display allows the operator to confirm train identifiers, block numbers, and timing, preventing mis-routed or premature releases and providing an auditable trail of who did what and when. CAD can perform automatic checks, but the procedural requirement is direct human observation by the dispatcher or control operator to ensure accuracy and safety.